Conversion GemsConversion Gems

SEO tools

WordPress plugins like Rank Math, content editors like NeuronWriter and AI writers like SEOWriting.ai solve different problems. Pick the layer you are missing.

Scored by the Conversion Gems editorial team · reviewed June 2026 4 with a free plan · 6 with a free trial · median listed price $29/mo
40%of the 10 SEO tools we review offer a free plan.
Based on 10 tools in our database, reviewed June 2026.
10 tools
DetailsPricingFree planFree trialBest forReview
Rank Math8.5 / 10Freemium$5.99/moYes—WordPress bloggers wanting advanced SEO without Yoast's paywallReview Rank Math
Ahrefs Toolbar7.9 / 10Freemium$29/moYes—Active Ahrefs subscribers doing daily link research and SERP analysisReview Ahrefs Toolbar
NeuronWriter7.2 / 10Freemium$19/moYesYesSEO content writers needing NLP-guided semantic optimizationReview NeuronWriter
SEOWriting.ai7.2 / 10Freemium$14/moYesYesFreelance SEO writers and agencies churning high-volume article draftsReview SEOWriting.ai
AIClicks.io7.1 / 10Paid$59/mo—YesBrands investing in AI search and answer engine visibilityReview AIClicks.io
Frase.io7.1 / 10Paid$39/mo—YesSEO content teams producing briefs and optimized articles at volumeReview Frase.io
Aiseo7.0 / 10Paid$1/mo—YesSEO teams needing AI search answer visibility trackingReview Aiseo
Writer.com7.0 / 10Paid$29/moper seat—YesEnterprise marketing and content teams needing brand-consistent AI output at scaleReview Writer.com
vue.ai6.8 / 10CustomCustomcontact sales——Enterprise fashion and apparel retailers with complex product catalogsReview vue.ai
GeoSpy AI6.2 / 10CustomCustomcontact sales——Law enforcement and government agencies needing rapid photo-to-location intelligenceReview GeoSpy AI
Rank Math8.5 / 10
Freemium · $5.99/mo

WordPress bloggers wanting advanced SEO without Yoast's paywall

Freemium · $29/mo

Active Ahrefs subscribers doing daily link research and SERP analysis

NeuronWriter7.2 / 10
Freemium · $19/mo · Free trial

SEO content writers needing NLP-guided semantic optimization

Freemium · $14/mo · Free trial

Freelance SEO writers and agencies churning high-volume article drafts

AIClicks.io7.1 / 10
Paid · $59/mo · Free trial

Brands investing in AI search and answer engine visibility

Frase.io7.1 / 10
Paid · $39/mo · Free trial

SEO content teams producing briefs and optimized articles at volume

Aiseo7.0 / 10
Paid · $1/mo · Free trial

SEO teams needing AI search answer visibility tracking

Writer.com7.0 / 10
Paid · $29/mo · Free trial

Enterprise marketing and content teams needing brand-consistent AI output at scale

vue.ai6.8 / 10
Custom

Enterprise fashion and apparel retailers with complex product catalogs

GeoSpy AI6.2 / 10
Custom

Law enforcement and government agencies needing rapid photo-to-location intelligence

About SEO tools

This group covers tools that work on the page itself rather than on links or rankings: WordPress SEO plugins, NLP content editors, AI article writers and trackers for AI-search answers. Most charge a flat monthly fee, with a median listed price of $29/mo; Writer.com is the exception, billed per seat from $29/seat/mo. 4 of the 10 tools have a free plan: Rank Math's plugin is free with Pro from $5.99/mo billed annually, and SEOWriting.ai's free plan covers 5 articles a month. Full SEO suites such as Semrush and Moz are compared under Rank Tracking.

What to compare before you choose

Plugin, content editor or AI writer

Rank Math changes your WordPress site directly, handling titles, schema and sitemaps. NeuronWriter and Frase.io score your drafts against pages that already rank, and SEOWriting.ai generates whole articles. These solve different problems, so pick the layer you are missing rather than the highest score.

Platform lock-in

Rank Math only works on WordPress, so Webflow, Squarespace and custom-stack sites need a browser-based editor instead. The Ahrefs Toolbar is free to install, but full backlink and traffic metrics require an Ahrefs subscription, which starts at $29/mo. Check what the free layer shows without the paid product behind it.

Originality and brand control

AI writing tools differ in how much control you keep. SEOWriting.ai is built for high-volume drafts but is a poor fit for brands worried about originality or AI-detection flags, while Writer.com targets brand-consistent output for enterprise teams at a per-seat price. Budget editing time either way.

Questions about SEO software